IGRT Connect is an innovative offline review system for radiotherapy treatments, operable directly through a web browser. Designed to enhance the precision of radiation therapy, it provides a specialized tool enabling physicians to verify patient positioning based on internal anatomy. This system seamlessly integrates scheduling and workflow, facilitating automated scheduling across acquisition equipment and ensuring compatibility with existing institutional systems. Its intuitive interface supports DICOM Query/Retrieve, allowing seamless image exportation and registration within IGRT Connect. Users benefit from features such as rigid image fusion, image windowing, filter tools, comprehensive measurement instruments, annotations, and timeline tracking of positioning errors. Through these capabilities, medical professionals can efficiently review portal images from any location, optimizing treatment accuracy and overall workflow efficiency.